I have sbs2008. Ive configured 3 accepted domains in the hub transport. One of them is the default. Each user can receive emails from all 3 domains into their mailboxes. However they need to be able to send from one of the two other domains.
for example. user receives email as email@example.com (default), user@ domain2.com and firstname.lastname@example.org the user can send as user@ domain1.com but needs to also send as email@example.com and firstname.lastname@example.org. is this possible? and how?